Correlation Analysis
BERKSHIRE HATHAWAY Class B vs United Therapeutics Corp
BRK.B vs UTHR
+0.804
Strong positive
When one moves up, the other tends to follow.
BERKSHIRE HATHAWAY Class B
↗BRK.B
Berkshire Hathaway is a holding company with a wide array of subsidiaries engaged in diverse activities. The firm's core business segment is insurance, run primarily through Geico, Berkshire Hathaway Reinsurance Group, and Berkshire Hathaway Primary Group. Berkshire has used the excess cash thrown off from its operations to acquire Burlington Northern Santa Fe (railroad), Berkshire Hathaway Energy (utilities and energy distributors), and the companies that make up its manufacturing, service, and retailing operations (which include Precision Castparts, Lubrizol, Clayton Homes, Marmon, and IMC/ISCAR). The conglomerate is unique in that it is run on a completely decentralized basis. Berkshire is expected to generate close to $375 billion in revenue in 2025.
Market cap 1T
United Therapeutics Corp
↗UTHR
United Therapeutics Corp specializes in drug development for pulmonary arterial hypertension (PAH), a rare and progressive disease marked by abnormally high blood pressure in the arteries of the lungs. The company's therapies for PAH largely focus on the prostacyclin pathway, and many of its treatments are based on the same molecule, treprostinil. The company markets and sells the following commercial therapies in the United States to treat PAH: Tyvaso DPI (treprostinil) Inhalation Powder, Remodulin Injection, Orenitram (treprostinil) Extended-Release Tablets, Adcirca (tadalafil) Tablets, and Unituxin. It derives maximum revenue from the sale of Tyvaso DPI. Geographically, the company operates in United States and Rest of the World, of which United States generates majority of the revenue.
Market cap 24.5B · 1,400 employees
Time Series
Relative Performance
Who Moves First
UTHR leads BRK.B by 6 days
UTHR tends to move before BRK.B.
After testing 13 timing shifts, the strongest relationship was +0.805 (they moved in the same direction).
Do They Crash Together?
Correlation by Market Regime
How these series behave when markets are rising, falling, or diverging. A correlation that holds in drawdowns is very different from one that only works in rallies.
Both Rising
+0.126
12 periods · Return correlation when both series rose
Both Falling
N/A
4 periods · Return correlation when both series fell
Diverging
-0.642
19 periods · Return correlation when series moved apart
R-Squared
64.7%
Share of variance in one series explained by the other.
Trend Agreement
58.4%
How often both series moved in the same direction period-to-period.
Overlap Quality
1,254
Deep shared window — 1,254 usable pairs.
Significance
p < 0.001
95% CI: [0.784, 0.823]
Scatter
XY Regression
Pipeline
Data quality details
Pipeline
Data quality details
Pipeline Summary
1,254 paired data points survived the daily window.
Raw input
1,254
1,254
Normalized
1,254
1,254
Prepared
1,254
1,254
Aligned
1,254
1,254
Invalid removed
0
A: 0 / B: 0
Duplicates removed
0
A: 0 / B: 0
Alignment drops
0
A: 0 / B: 0
Series A
BERKSHIRE HATHAWAY Class B
BRK.B
Market cap 1T
Stock · 1,254 raw → 1,254 prepared
Series B
United Therapeutics Corp
UTHR
Market cap 24.5B · 1,400 employees
Stock · 1,254 raw → 1,254 prepared
Sign agreement
100.0%
How often both values share the same sign.
Zero crossings
44
Estimated crossover points between normalized spreads.
Slope
0.8713
Linear regression slope.
Intercept
-53.4448
Linear regression intercept.
Related Extremes
Highest and Lowest Correlated
Saved 6 hours ago · ID: stock-brk-b-vs-stock-uthr-daily